Epever UPower-HI Series User Manual page 9

Pin
1
2
3
4
Please refer to the "BMS Lithium Battery Protocols & Fixed ID Table" or contact our
technical supporters for the currently supported BMS manufacturers and the BMS
CAUTION
parameters.
② Dry contact interface

Working principle:
When the battery voltage reaches the dry contact ON voltage (DON), the dry contact is connected. Its coil
is energized. The dry contact can drive resistive loads of no more than 125VAC /1A, 30VDC/1A.
According to different battery types of the inverter charger, the default values of the dry contact ON (DON)
voltage and the dry contact OFF(DOF) voltage are different. Please refer to the chapter 3.5 Settings >
item 19 DON and item 20 DOF for details.
③ RS485 interface（DB9 female）
DB9 pin definition for RTU-type UP-Hi series:
Pin
1-2
3
4
5
Definition
+5VDC
+5VDC
RS485-B
RS485-B
Definition
NC
+12VDC
GND2(+12VDC power ground)
GND1(+5VDC power ground)
Pin
5
6
7
8
Pin
6
7
8
9
7
Definition
RS485-A
RS485-A
GND
GND
Definition
NC
RS485-A
RS485-B
+5VDC